Is there a Social Media Analytics solution capable of tracking unlimited numbers of Facebook/Twitter accounts?

I’ve been searching through numerous solutions such as Radian6, Meltwater Buzz, Social Report and more. Most analytical tools measure online chatter through brands and keywords (Online Reputation Management) but I am looking for a solution that will provide automated weekly/monthly analytical reports of 500+ Facebook and 500+ Twitter accounts which I have admin access to, all within a single dashboard.

Does a solution in the market like this exist? If not, are there any companies you’d recommend that can provide a bespoke solution for tracking this kind of number of accounts?

Haven’t personally used any but read good things about:

Viralheat
Simply measured
Tap 11
Wildfire
Webtrends

I do basic social media tracking (number of mentions on FB, Twitter, Stumble Upon etc) with SEO PowerSuite tools but as you may guess their key objective is SEO analysis.

Also, if social media is your core business making you nice money, then it may be worth to invest it into some sort of custom analytics solution. Look for IT outsourcing firms or a good freelancer.